﻿/* dk2Repository - Copyright (C) 2011 Daniel Kuczewski http://www.dk2.de/

 * This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA */

using System.Text;

namespace dk2Repository.QueryBuilder.MySql
{
    internal class MySqlSelectBuilder : dk2Repository.QueryBuilder.SelectBuilder
    {
        public MySqlSelectBuilder(dk2Repository.QueryBuilder.ISqlBuilder builder)
            : base(builder)
        {
        }

        public override string CreateSql()
        {
            var sb = new StringBuilder();

            sb.Append("SELECT ");

            if(Columns.Length == 0)
                sb.Append("*");
            else
            {
                foreach (var column in Columns)
                    sb.Append(column).Append(",");

                sb.Remove(0, sb.Length - 1);
            }
            
            sb.Append(" FROM ").Append(Table).Append(" ");
            foreach (var join in Joins)
                sb.Append(join).Append(" ");


            sb.Append(" ").Append(Where.CreateSql()).Append(" ");
            
            if(Orders.Length > 0)
            {
                sb.Append("ORDER BY ");

                foreach (var order in Orders)
                    sb.Append(order).Append(",");

                sb.Remove(0, sb.Length - 1);
            }

            sb.Append(";");

            return sb.ToString();
        }
    }
}